/*
 * Author:
 *      Guido Draheim <guidod@gmx.de>
 *      Tomi Ollila <Tomi.Ollila@iki.fi>
 *
 * Copyright (c) 1999,2000,2001,2002,2003 Guido Draheim
 *          All rights reserved
 *          use under the restrictions of the
 *          Lesser GNU General Public License
 *          or alternatively the restrictions
 *          of the Mozilla Public License 1.1
 *
 * This is the private header containing definitions that are not
 * use by a libzzip user application. Writing an extension lib that
 * uses libzzip will still want to include this. The extension
 * write should make way to have the ISO C9X integer types defined.
 */
#ifndef _ZZIP_LIB_H /* zzip.h */
#define _ZZIP_LIB_H

#include <zzip.h>
#include <zzip_plugin.h>
#include <zzip_stdint.h>

/*
 * this structure cannot be wildly enlarged... (see zzip-zip.c)
 */
struct zzip_dir_hdr
{
    uint32_t d_usize;           /* uncompressed size */
    uint32_t d_csize;           /* compressed size */
    uint32_t d_crc32;           /* the adler32-checksum */
    uint32_t d_off;             /* offset of file in zipfile */
    uint16_t d_reclen;          /* next dir_hdr structure offset */
    uint16_t d_namlen;          /* explicit namelen of d_name */
    uint8_t d_compr;            /* the compression type, 0 = store, 8 = inflate */
    char d_name[1];             /* the actual name of the entry, may contain DIRSEPs */
};
#define _ZZIP_DIRENT_HAVE_D_NAMLEN
#define _ZZIP_DIRENT_HAVE_D_OFF
#define _ZZIP_DIRENT_HAVE_D_RECLEN

/*
 * you shall not use this struct anywhere else than in zziplib sources.
 */
struct zzip_dir
{
    __zzipfd fd;
    int errcode; /* zzip_error_t */
    long refcount;
    struct   /* reduce a lot of alloc/deallocations by caching these: */
    { int* volatile locked;
      struct zzip_file* volatile fp;
      char* volatile buf32k; } cache;
    struct zzip_dir_hdr* hdr0;   /* zfi; */
    struct zzip_dir_hdr* hdr;    /* zdp; directory pointer, for dirent stuff */
    struct zzip_file* currentfp;  /* last fp used... */
    struct zzip_dirent dirent;
    void* realdir;                /* e.g. DIR* from posix dirent.h */
    char* realname;
    zzip_strings_t* fileext;      /* list of fileext to test for */
    zzip_plugin_io_t io;          /* vtable for io routines */
};

#define ZZIP_32K 32768

/* try to open a zip-basename with default_fileext */
int __zzip_try_open(zzip_char_t* filename, int filemode,
                    zzip_strings_t* ext, zzip_plugin_io_t io);

ZZIP_DIR*
zzip_dir_fdopen(__zzipfd fd, zzip_error_t* errcode_p);

ZZIP_DIR*
zzip_dir_fdopen_ext_io(__zzipfd fd, zzip_error_t* errorcode_p,
                       zzip_strings_t* ext, const zzip_plugin_io_t io);

ZZIP_DIR* /*depracated*/
zzip_dir_alloc_ext_io(zzip_strings_t* ext, const zzip_plugin_io_t io);

#endif /* _ZZIP_H */